TiO2 Films Synthesis over Polypropylene by Sol-Gel Assisted with Hydrothermal Treatment for the Photocatalytic Propane DegradationReport as inadecuate




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The present investigation shows experimental results obtained with TiO2 thin films synthesized by the sol-gel method assisted with hydrothermaltreatment over polypropylene, using the dip coating technique. Obtainedcoatings were characterized through SEM, XRD, UV-Vis and the photo- catalyticactivity was monitored by GC. According to results, the hydrothermal treatmentfacilitates the crystallization of the TiO2 anatase phase, which ispresent in all synthesized films. Crystal size formed from precursor solutionsestimated by the Scherrer’s equation depends on the time and temperature ofthe hydrothermal treatment, wherein solution exposed to a higher temperaturetreatment of 150。C for 1.5 h H150-1.5 exhibited a larger crystal sizecompared to those synthesized at 80。C for 1.5 h and 3 h H80-1.5 and H80-3.Sample H150-1.5 over polypropylene resulted in a uniform and crack freecoating. This behavior was attributed to the precursor solution being denserthan those synthesized at 80。C. Additionally, the photocatalytic activity ofthe coatings was evaluated through the degradation of propane. Coating H150-1.5reached 100% conversion after 3 h of UV light irradiation.

KEYWORDS

TiO2 Coating, Polypropylene, Propane Photodegradation, Photocatalysis

Cite this paper

Guzmán-Velderrain, V. , Ortega López, Y. , Salinas Gutiérrez, J. , López Ortiz, A. and H. Collins-Martínez, V. 2014 TiO2 Films Synthesis over Polypropylene by Sol-Gel Assisted with Hydrothermal Treatment for the Photocatalytic Propane Degradation. Green and Sustainable Chemistry, 4, 120-132. doi: 10.4236-gsc.2014.43017.





Author: Vanessa Guzmán-Velderrain, Yudith Ortega López, Jesús Salinas Gutiérrez, Alejandro López Ortiz, Virginia H. Collins-Martíne

Source: http://www.scirp.org/



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